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Dynamic Thrust Load Capacity
For Load Direction
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Ball Bearing Profile
Roller Bearing Type
Thrust Ball Bearings
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For silky-smooth motion, the balls inside these bearings roll nearly friction-free. You'll often find them at the end of a shaft or between a stationary and rotating surface, such as on a propeller or rotary table.
These bearings come as three separate pieces—one cage and two washers. The cage holds the balls in place, while the washers create a surface for the balls to roll on. This design is easy to lubricate, but the oil will attract dust and grime since it's exposed.
Steel—Strong and wear resistant. However, these bearings are best for dry environments since moisture will cause them to rust.
For Shaft Dia., mm | OD, mm | Thk., mm | Cage Material | Dynamic Thrust Load Cap., lb. | Max. Rotation Speed, rpm | Temp. Range, ° F | Includes | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
Steel | |||||||||||
| 120 | 155 | 25 | Steel | 20,000 | 2,200 | -40 to 250 | Two Washers | 7806K732 | 0000000 | ||
Needle-Roller Thrust Bearings
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Bearings | Washers |
Small but mighty, our thinnest rolling thrust bearings slot into tight spaces and spin at whirring speeds. Their long, slender rollers support thrust loads and reduce friction in everything from machine tool spindles to gearboxes.
A cage holds the rollers in place. You can install these bearings without washers between hardened, ground surfaces for the thinnest profile. If you’re working with unhardened, unground surfaces, you’ll need two washers for the rollers to run on. This three-piece design is easy to lubricate, but the oil will attract dust and grime since it’s exposed.
Steel—Strong and wear resistant. However, these bearings are best for dry environments since moisture will cause them to rust.
Washers for Needle-Roller Thrust Bearings
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For Shaft Dia., mm | OD, mm | Thk., mm | Washer Material | Specs. Met | Each | ||
|---|---|---|---|---|---|---|---|
| 120 | 155 | 1 | Steel | DIN 5405-3, ISO 303 | 5909K111 | 000000 |
Bearing Locknuts
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Carbon Steel |
With a nylon insert that grips your threaded shaft or spindle without damaging its threads, these locknuts—also called shaft nuts—hold bearings, bushings, gears, and pulleys prone to vibration tightly in place. They come as one piece, so you can easily clamp them onto your shaft or spindle. But, since they aren’t made entirely of metal, they don’t stand up to heat as well as all-metal locknuts. Slots in their sides mean you can tighten and loosen them with a spanner wrench or spanner socket. Their face is also chamfered to help keep the size and weight of your assembly at a minimum. All meet international standards for bearing locknut dimensions.
Carbon Steel—All carbon steel locknuts are strong and resist wear, though they don’t stand up to corrosion as well as 303 stainless steel locknuts.
Thread Spacing—When choosing your thread spacing, consider the precision of your application. The finer the threads, the more control you have when making adjustments.
Thread | Carbon Steel | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Size | Spacing | OD, mm | Wd., mm | Insert Max. Temp., ° F | Specs. Met | Each | |||
Chamfered Face | |||||||||
| M120 × 2 mm | Extra Fine | 155 | 23 | 160 | ISO 2982-2 | 5197N129 | 0000000 | ||
Bearing Nuts
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Carbon Steel Chamfered Face |
Often paired with spring lock washers to strengthen their hold, these bearing nuts—also known as shaft nuts—keep vibration from shifting bearings, bushings, pulleys, and gears on your threaded shaft or spindle. They have slotted sides, so you can tighten and loosen them with a spanner wrench or spanner socket.
Carbon Steel—Carbon steel bearing nuts are strong and resist wear.
Chamfered Face—Chamfered-face bearing nuts weigh less and produce less heat than stepped-face nuts.
ISO 2982— Some chamfered-face bearing nuts meet ISO 2982 (formerly DIN 981), an international standard for bearing locknut dimensions. Their sizes correspond to SKF KM series. Use them with DIN 5406 spring lock washers.
Thread Spacing—When choosing your thread spacing, consider the precision of your application. The finer the threads, the more control you have when making adjustments.
